全文获取类型
收费全文 | 76篇 |
免费 | 7篇 |
专业分类
财政金融 | 1篇 |
工业经济 | 10篇 |
计划管理 | 17篇 |
经济学 | 16篇 |
综合类 | 4篇 |
运输经济 | 2篇 |
贸易经济 | 6篇 |
农业经济 | 19篇 |
经济概况 | 8篇 |
出版年
2022年 | 2篇 |
2021年 | 3篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 3篇 |
2014年 | 4篇 |
2013年 | 8篇 |
2012年 | 8篇 |
2011年 | 7篇 |
2010年 | 7篇 |
2009年 | 10篇 |
2008年 | 3篇 |
2007年 | 3篇 |
2006年 | 6篇 |
2005年 | 2篇 |
2003年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1996年 | 1篇 |
排序方式: 共有83条查询结果,搜索用时 31 毫秒
1.
Based on a CGE exercise of a subsidy to initiate ethanol production in Mexico, we use Monte Carlo simulations for consumer demand elasticities and ethanol cost estimates. The analysis provides three conclusions: when markets vary smoothly and predictably, Monte Carlo methods can then help to gauge the actual probability that a given program will achieve a desired outcome. Second, secondary markets may display little or no sensitivity to these parameter variations. Finally, a ‘razor’s edge’ outcome with no positive benefits if a critical parameter falls below some critical value, reveals that an economic policy may not be conducive to ‘fine tuning’ by marginal adjustments. 相似文献
2.
马玲 《石油工业技术监督》2005,21(9):12-14
介绍了燃料乙醇仿真系统软、硬件的结构,着重阐明了它的设计思想和技术特色;标准、适用、灵活是该系统的最重要的特点;实现了全流程的仿真;该系统既可用于培训,还可用于运行指导. 相似文献
3.
曹文继 《内蒙古财经学院学报(综合版)》2010,8(1):49-52
专业分流是高校教务管理工作中一项重要的、具有复杂性的工作,随着高校招生规模的不断扩大,依靠传统手工的方式完成分流工作已不能够适应新形势下对专业分流的要求,设计开发一套基于教务管理平台的专业分流系统软件是非常有必要的。本系统采用分层设计思想、应用struts2开发框架,实现网上专业志愿填报、成绩计算、志愿成绩排名、专业分流录取等功能。本文给出了专业分流系统的设计和关键代码实现。 相似文献
4.
5.
近年来,石油短缺、油价昂贵导致世界生物能源产业,如燃料乙醇产业迅猛扩张。而乙醇产量的迅猛增长,消耗了大量粮食类农产品(特别是玉米),从而造成全球性的"粮食能源化"问题。为应对能源危机和粮食危机的同时出现,我国应调整燃料乙醇的原料结构,采用非口粮类能源作物、庄稼废料、城市垃圾等,实现能源与粮食的双丰收,推动经济社会的可持续发展。 相似文献
6.
Evaldo Costa Julia Seixas Gustavo Costa Thomas Turrentine 《International Journal of Sustainable Transportation》2017,11(7):518-525
The Brazilian cities as well as many of the large urban centers in the world continue to expand, increasing the demand for mobility and transport, while, at the same time, the same cities are investing in greenhouse gas (GHG) mitigation to avoid climate change. Brazil's urbanization rate increased from 26% in 1940 to almost 70% in 1980. During this period, the Brazilian population tripled and the urban population multiplied by seven. In 2010, the transport sector in São Paulo accounted for 71% of the total emissions released by the energy sector. Ethanol has been considered a fuel with less greenhouse gas emissions, when compared with fossil fuels. However, ethanol production would have to double to meet the expected demand. Electric vehicles (EVs) market is expanding around the world, and is also an option to reduce the transport emissions, if powered by clean electricity. To assess whether the adoption of EVs might bring more benefits than the current ethanol, we develop prospective scenarios supported by the Long-range Energy Alternatives Planning (LEAP) simulation tool, taking a bottom-up tank-to-wheel approach to consider the CO2 emissions of car in São Paulo. The scenario considering a substitution of 25% of gasoline-powered cars by EV in 2030 showed a reduction in energy consumption and CO2 emissions, around 15% and 26% respectively in that year in comparison with 2015. We discuss the interplay between ethanol and EV, also considering emission coefficients from life cycle analysis conducted in Brazil, and concluded EV will have higher positive impact on climate change mitigation than ethanol. 相似文献
7.
The Impact of an EU–US Transatlantic Trade and Investment Partnership Agreement on Biofuel and Feedstock Markets
下载免费PDF全文
![点击此处可从《Journal of Agricultural Economics》网站下载免费的PDF全文](/ch/ext_images/free.gif)
John C. Beghin Jean‐Christophe Bureau Alexandre Gohin 《Journal of Agricultural Economics》2017,68(2):321-344
We assess the impact of a potential TTIP bilateral free trade agreement on the EU and US bio‐economies (feedstock, biofuels, by‐products, and related competing crops) and major trade partners in these markets. The analysis develops a multi‐market model that incorporates bilateral trade flows (US to EU, EU to US, and similarly with third countries) and is calibrated to the OECD‐FAO baseline for 2013–2022 to account for recent policy decisions. The major policy reforms from a TTIP involve tariff and TRQ liberalisation and their direct contractionary impact on US sugar supply, EU biofuel production, and indirect negative effect on US high fructose corn syrup (HFCS) production. EU sugar and isoglucose production expand along with US ethanol and biodiesel and oilseed crushing. EU sugar would flow to the US, US biofuels and vegetable oil to the EU. We further quantify non‐tariff measures (NTM) affecting these trade flows between the EU and the US. EU oilseed production contracts, and EU crushing expands with improving crushing margins following reduced NTM frictions. Our analysis reveals limited net welfare gains with most net benefits reaped by Brazil and not the two trading partners of the TTIP. 相似文献
8.
9.
Biofuels and Sustainable Energy Development in Brazil 总被引:1,自引:0,他引:1
Emilio Lèbre La Rovere 《World development》2011,39(6):1026-1036
10.